Select the correct sentence:
A) The 3 mm node was excised.
B) The 3-mm node was excised.
I answered B
Right.
Wrong it is A just got it wrong on my test.
Yes, you are correct. The correct sentence is B) "The 3-mm node was excised."
In this sentence, the number "3" and the unit "mm" are describing the size of the node. According to standard style guidelines, when using numbers to describe measurements, you should use a hyphen (-) to connect the number and the unit, without any spaces in between. So, "3-mm" is the correct way to write it in this case.
When expressing measurements, it is important to use the correct punctuation and spacing to ensure clarity and accuracy.